The Adam Lambert and Queen news is finally official: He'll be on stage with the iconic band for one show this summer at a music festival north of London.
"As many suspected, I can finally confirm: I have been invited by Queen to sing one very special concert! Sonisphere at Knebworth July 7th!," the "American Idol" runner-up said late Monday on Twitter. "Sorry to be coy about the details the past few weeks, but I made a promise to keep it under wraps as best I could. Gonna be a surreal night!"
Queen's Brian May and Roger Taylor confirmed Tuesday that the 30-year-old American singer-songwriter will perform vocals for the band's headline set on the second day of the Sonisphere 2012 rock festival. Freddie Mercury's final concert with the band was at Knebworth, in August 1986. He died in November 1991.
"Judging by my incoming mail," May said on the Sonisphere website, "this decision will make a lot of people very happy. It’s a worthy challenge for us, and I’m sure Adam would meet with Freddie's approval! And what better place to revisit, and walk those emotional paths than Knebworth? It will be a rush."
Lambert's performance of Queen's "We Are the Champions" with eventual winner Kris Allen rocked the "Idol" finale back in 2009 -- that after Lambert had auditioned with "Bohemian Rhapsody." Last November he sang an eight-minute set at the MTV Europe Awards to celebrate Queen's Global Icon Award.
The due date for Lambert's second album, "Trespassing," has been pushed back from its planned March 20 release. "Working on some new songs, making the album even better! Thank you all for understanding." he said Feb. 16.
The Associated Press contributed to this report.
Photo: Adam Lambert visits "The Morning Jolt with Larry Flick" on SiriusXM OutQ at SiriusXM Studio in New York on Valentine's Day. Credit: Cindy Ord / Getty Images